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公开(公告)号：US20240058764A1
公开(公告)日：2024-02-22
申请号：US17766375
申请日：2020-09-29
发明人： Katsuya UMEMOTO , Takafumi ITO , Koji FUKUMOTO , Tomoaki UMEMURA , Koji MIYAKE , Kazuhiko EDA , Youhei YABUNO , Kensaku KOMATSU
CPC分类号： B01D63/043 , B01D53/22 , B01D2313/10 , B01D2313/12 , B01D2053/224
摘要： A gas separation membrane module includes at least one hollow fiber membrane element and a casing. The hollow fiber membrane element includes hollow fiber membranes and a cylindrical body. The cylindrical body extends in a longitudinal direction of the hollow fiber membranes, and accommodates the hollow fiber membranes. The hollow fiber membrane element includes sweep gas introduction ports and mixed gas discharge ports. A first supply chamber, a first discharge chamber, a second supply chamber, and a second discharge chamber are positioned between the casing and the hollow fiber membrane element. The first supply chamber, the first discharge chamber, the second supply chamber, and the second discharge chamber are partitioned off from each other.
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公开(公告)号：US20200246749A1
公开(公告)日：2020-08-06
申请号：US16608913
申请日：2018-04-25
IPC分类号： B01D53/22
摘要： An air purifying system for purifying air in a room includes: a carbon dioxide removing device including a first space and a second space that are divided from each other by a separation membrane that selectively allows carbon dioxide to permeate therethrough; a feed passage that leads the air in the room to the first space; a return passage that leads purified air from which carbon dioxide has been removed from the first space to the room; and a decompression pump that draws a vacuum in the second space, such that a carbon dioxide partial pressure in the second space is lower than a carbon dioxide partial pressure in the air in the room.
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公开(公告)号：US20200086269A1
公开(公告)日：2020-03-19
申请号：US16608885
申请日：2018-04-25
摘要： An air purifying system is a system for purifying air in a room, and the air purifying system includes: a carbon dioxide removing device including a first space and a second space that are divided from each other by a separation membrane that selectively allows carbon dioxide to permeate therethrough; a feed passage that leads the air in the room to the first space; a return passage that leads purified air from which carbon dioxide has been removed from the first space to the room; a supply passage that supplies sweep gas to the second space, the sweep gas having a carbon dioxide partial pressure that is lower than a carbon dioxide partial pressure in the air in the room; and a discharge passage that discharges the sweep gas from the second space after the sweep gas is mixed with the carbon dioxide that has permeated through the separation membrane.
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公开(公告)号：US20220134275A1
公开(公告)日：2022-05-05
申请号：US17427506
申请日：2020-01-24
发明人： Katsuya UMEMOTO , Kazuhiro OKUMURA , Kouji FUKUMOTO , Tomoaki UMEMURA , Hideto MATSUYAMA , Eiji KAMIO
摘要： An air purifying system includes: a carbon dioxide remover including first and second spaces partitioned by a gas permeable membrane with 50 nm or less diameter micropores; a feed passage leading to-be-purified air from a room to the first space; a supply passage supplying clean gas having lower carbon dioxide and higher oxygen concentrations than the to-be-purified air to the second space; a discharge passage discharging, from the second space, mixed gas; a return passage leading purified air from the first space into the room, the purified air resulting from removing carbon dioxide from the to-be-purified air; and adjusting equipment adjusting a gas pressure in the first and second spaces to be substantially equal to each other. The to-be-purified air flows in the first space along a surface of the gas permeable membrane, and the clean gas flows in the second space along a surface of the gas permeable membrane.
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